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configure.ac: Check for trunc and truncf in libm.

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* configure.ac: Check for trunc and truncf in libm.
	* configure: Regenerate.
	* config.h.in: Likewise.
	* intrinsics/c99_functions.c (trunc, truncf): New functions.
	* c99_protos.h (trunc, truncf): Declare them.

From-SVN: r100040
This commit is contained in:
Eric Botcazou 2005-05-21 08:44:50 +02:00 committed by Eric Botcazou
parent 542b52ddb2
commit 69a2d125d6
6 changed files with 191 additions and 1 deletions
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8
libgfortran/ChangeLog
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@ -1,3 +1,11 @@
2005-05-21 Eric Botcazou <ebotcazou@libertysurf.fr>
* configure.ac: Check for trunc and truncf in libm.
* configure: Regenerate.
* config.h.in: Likewise.
* intrinsics/c99_functions.c (trunc, truncf): New functions.
* c99_protos.h (trunc, truncf): Declare them.
2005-05-18 Thomas Koenig <Thomas.Koenig@online.de>
PR libfortran/21127

8
libgfortran/c99_protos.h
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@ -113,6 +113,14 @@ extern float tanf(float);
extern float tanhf(float);
#endif
#ifndef HAVE_TRUNC
extern double trunc(double x);
#endif
#ifndef HAVE_TRUNCF
extern float truncf(float x);
#endif
#ifndef HAVE_NEXTAFTERF
extern float nextafterf(float, float);
#endif

6
libgfortran/config.h.in
View File

@ -264,6 +264,12 @@
/* Define to 1 if you have the <time.h> header file. */
#undef HAVE_TIME_H
/* libm includes trunc */
#undef HAVE_TRUNC
/* libm includes truncf */
#undef HAVE_TRUNCF
/* Define to 1 if you have the <unistd.h> header file. */
#undef HAVE_UNISTD_H

146
libgfortran/configure vendored
View File

@ -2937,7 +2937,7 @@ if test "x$GCC" = "xyes"; then
AM_FCFLAGS="-Wall"
## We like to use C99 routines when available. This makes sure that
## __STDC_VERSION__ is set such that libc includes make them available.
AM_CFLAGS="-std=gnu99 -Wall -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wextra -Wwrite-strings"
AM_CFLAGS="-std=gnu99 -Wall -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wextra -Wwrite-strings"
fi
@ -9570,6 +9570,150 @@ _ACEOF
fi
echo "$as_me:$LINENO: checking for trunc in -lm" >&5
echo $ECHO_N "checking for trunc in -lm... $ECHO_C" >&6
if test "${ac_cv_lib_m_trunc+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
ac_check_lib_save_LIBS=$LIBS
LIBS="-lm $LIBS"
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
/* Override any gcc2 internal prototype to avoid an error. */
#ifdef __cplusplus
extern "C"
#endif
/* We use char because int might match the return type of a gcc2
builtin and then its argument prototype would still apply. */
char trunc ();
int
main ()
{
trunc ();
;
return 0;
}
_ACEOF
rm -f conftest.$ac_objext conftest$ac_exeext
if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
(eval $ac_link) 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&5
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } &&
{ ac_try='test -z "$ac_c_werror_flag"
|| test ! -s conftest.err'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; } &&
{ ac_try='test -s conftest$ac_exeext'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
ac_cv_lib_m_trunc=yes
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
ac_cv_lib_m_trunc=no
fi
rm -f conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
LIBS=$ac_check_lib_save_LIBS
fi
echo "$as_me:$LINENO: result: $ac_cv_lib_m_trunc" >&5
echo "${ECHO_T}$ac_cv_lib_m_trunc" >&6
if test $ac_cv_lib_m_trunc = yes; then
cat >>confdefs.h <<\_ACEOF
#define HAVE_TRUNC 1
_ACEOF
fi
echo "$as_me:$LINENO: checking for truncf in -lm" >&5
echo $ECHO_N "checking for truncf in -lm... $ECHO_C" >&6
if test "${ac_cv_lib_m_truncf+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
ac_check_lib_save_LIBS=$LIBS
LIBS="-lm $LIBS"
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
/* Override any gcc2 internal prototype to avoid an error. */
#ifdef __cplusplus
extern "C"
#endif
/* We use char because int might match the return type of a gcc2
builtin and then its argument prototype would still apply. */
char truncf ();
int
main ()
{
truncf ();
;
return 0;
}
_ACEOF
rm -f conftest.$ac_objext conftest$ac_exeext
if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
(eval $ac_link) 2>conftest.er1
ac_status=$?
grep -v '^ *+' conftest.er1 >conftest.err
rm -f conftest.er1
cat conftest.err >&5
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } &&
{ ac_try='test -z "$ac_c_werror_flag"
|| test ! -s conftest.err'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; } &&
{ ac_try='test -s conftest$ac_exeext'
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
(eval $ac_try) 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
ac_cv_lib_m_truncf=yes
else
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
ac_cv_lib_m_truncf=no
fi
rm -f conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
LIBS=$ac_check_lib_save_LIBS
fi
echo "$as_me:$LINENO: result: $ac_cv_lib_m_truncf" >&5
echo "${ECHO_T}$ac_cv_lib_m_truncf" >&6
if test $ac_cv_lib_m_truncf = yes; then
cat >>confdefs.h <<\_ACEOF
#define HAVE_TRUNCF 1
_ACEOF
fi
echo "$as_me:$LINENO: checking for erf in -lm" >&5
echo $ECHO_N "checking for erf in -lm... $ECHO_C" >&6
if test "${ac_cv_lib_m_erf+set}" = set; then

2
libgfortran/configure.ac
View File

@ -206,6 +206,8 @@ AC_CHECK_LIB([m],[sinhf],[AC_DEFINE([HAVE_SINHF],[1],[libm includes sinhf])])
AC_CHECK_LIB([m],[sqrtf],[AC_DEFINE([HAVE_SQRTF],[1],[libm includes sqrtf])])
AC_CHECK_LIB([m],[tanf],[AC_DEFINE([HAVE_TANF],[1],[libm includes tanf])])
AC_CHECK_LIB([m],[tanhf],[AC_DEFINE([HAVE_TANHF],[1],[libm includes tanhf])])
AC_CHECK_LIB([m],[trunc],[AC_DEFINE([HAVE_TRUNC],[1],[libm includes trunc])])
AC_CHECK_LIB([m],[truncf],[AC_DEFINE([HAVE_TRUNCF],[1],[libm includes truncf])])
AC_CHECK_LIB([m],[erf],[AC_DEFINE([HAVE_ERF],[1],[libm includes erf])])
AC_CHECK_LIB([m],[erfc],[AC_DEFINE([HAVE_ERFC],[1],[libm includes erfc])])
AC_CHECK_LIB([m],[erfcf],[AC_DEFINE([HAVE_ERFCF],[1],[libm includes erfcf])])

22
libgfortran/intrinsics/c99_functions.c
View File

@ -202,6 +202,28 @@ tanhf(float x)
}
#endif
#ifndef HAVE_TRUNC
double
trunc(double x)
{
if (!isfinite (x))
return x;
if (x < 0.0)
return - floor (-x);
else
return floor (x);
}
#endif
#ifndef HAVE_TRUNCF
float
truncf(float x)
{
return (float) trunc (x);
}
#endif
#ifndef HAVE_NEXTAFTERF
/* This is a portable implementation of nextafterf that is intended to be
independent of the floating point format or its in memory representation.